jayrex Posted February 20, 2016 Share Posted February 20, 2016 After about 3k miles, my AOS is full to the brim with this stuff. Its about the consistency of milk, smells like solvent. I expected oil in there.. is it water/oil mix? why so much? My oil looks fine, no foamy stuff. Thanks Link to comment Share on other sites More sharing options...
TheMonaLisa Posted February 20, 2016 Share Posted February 20, 2016 It's is a water oil mix and it is totally normal. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Nightmaresmk Posted February 21, 2016 Share Posted February 21, 2016 Yup completely normal. AOS route back in you have a catch can. suggest swapping to a real aos like IAG/Perrin/craford or radium and it will stay clean since it will purge the steam. and since they are heated they will not freeze when it's cold. Link to comment Share on other sites More sharing options...
jayrex Posted February 21, 2016 Author Share Posted February 21, 2016 Sounds good, thanks for the tip. Link to comment Share on other sites More sharing options...
gtonstilts Posted February 22, 2016 Share Posted February 22, 2016 just take comfort in the fact that that crap isnt coating thw intercooler screwing up the efficiency :-) Link to comment Share on other sites More sharing options...
Max Capacity Posted February 24, 2016 Share Posted February 24, 2016 White milky stuff is because your oil is not getting hot enough to boil the moisture out. That's why some AOS have a coolant line to them to help them get hot. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
quick4dr Posted February 24, 2016 Share Posted February 24, 2016 as its been stated before the Legacy is not a happy short drive vehicle. highway time is needed to boil out oil moisture. repeated short trips and no long term driving allows froth to accumulate in the filler neck, and Catch cans. if your commute is short, try to combine activities as to do all your driving warmed up. Now with cheap gas, don't be afraid to enjoy your Legacy and go for a weekend drive. Link to comment Share on other sites More sharing options...
jayrex Posted February 26, 2016 Author Share Posted February 26, 2016 Thanks for the comments guys. My commute is 25 mins if the highway is clear. It'll be 1 hour if the highway is stop and go. I do a bunch of short trips too though. I did a bunch of research before I put in the catch can, I'm just surprised that I didn't run into any accounts of this water build up. It seems like common knowledge. =/ All is well if it just drain it frequently right? Link to comment Share on other sites More sharing options...
mondtster Posted February 28, 2016 Share Posted February 28, 2016 Engines will create water regardless of how run. We have engines running full load 24/7 where I work and they still create moisture and need to have the catch can drained. Some engine designs seem to create more water than others based on what I've seen so that should be another consideration. I'd keep an eye on it and drain it periodically, trying to figure out how much moisture is created and under what conditions. Link to comment Share on other sites More sharing options...
Max Capacity Posted February 29, 2016 Share Posted February 29, 2016 I have a AOS that replaces my oil fill cap, if it's really cold out, I'll get a little milky build up. But its close the heat of the engine, your can is a bit away from the heat, so its running a little cooler, that's why moisture condenses there. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
TheMonaLisa Posted March 1, 2016 Share Posted March 1, 2016 I have a AOS that replaces my oil fill cap, if it's really cold out, I'll get a little milky build up. But its close the heat of the engine, your can is a bit away from the heat, so its running a little cooler, that's why moisture condenses there. What brand AOS do you have? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Nightmaresmk Posted March 1, 2016 Share Posted March 1, 2016 It has to be Prova or Grimmspeed. Link to comment Share on other sites More sharing options...
need bb Posted March 1, 2016 Share Posted March 1, 2016 I have a catch can connected to the crankcase and during the winter I have to empty in at least once a month. In rarely has any oil, just some yellowish water. I imagine if I drove a little harder there would be more oil. Link to comment Share on other sites More sharing options...
Max Capacity Posted March 1, 2016 Share Posted March 1, 2016 What brand AOS do you have? Sent from my iPhone using Tapatalk It has to be Prova or Grimmspeed. It's like those, I bought it off a GB on NASIOC about 6 years ago. You can see it in some of the pictures in my click here link. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
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